//TypeScript中元组的使用和类型约束,元组可以理解为数组的加强版
const xiaoJieJie7: (string | number)[] = ["大脚", 28, "刘英"];
//使用下面注解方式,就会被理解成元组,会严格要求每一个值的类型
// const xiaoJieJie71:[string,string,number] = ["大脚", 28, "刘英"];
//CSV格式
const xiaoJieJies7: [string, string, number][] = [
  ["大脚", "teacher", 38],
  ["刘英", "student", 18],
  ["翠花", "teacher", 22],
];
